Has Wolff seen more trouble brewing?

Wolff's hints that one of Hamilton and Rosberg will have to leave if they can't control their rivalry seem excessive after a fairly tranquil season. IAN PARKES wonders what else is going on at Mercedes

At what point does controversy within a team overstep the mark?

Mercedes motorsport boss Toto Wolff's remarks of late about his two star drivers have raised just such a question.